Physico-chemical and bacteriological analysis of drinking tube-well water from some primary school, Magura, Bangladesh to evaluate suitability for students

In order to determine water quality for human consumption, physico-chemical and bacteriological analysis were evaluated in the drinking water from twenty villages of Magura district, Bangladesh of different primary school. Standard methods were used for determining of physical, chemical and bacteriological characteristics of the water samples. The data showed the variation of the investigated parameter in water samples as follows: pH 7.29 to 8.93, Electrical Conductivity (EC) 343 to 3000 μS/cm, Total Dissolved Solids (TDS) 236 to 2064 mg/L, chloride 10–725 mg/L, hardness 130 to 790 mg/L as CaCO3, Arsenic Bellow Detection Limit (BDL) to 0.012 mg/L, Iron (Fe) 0.03 to 3.79 mg/L and Manganese (Mn) 0.03 to 0.66 mg/L. Results were compared with World Health Organization (WHO) and Bangladesh water quality drinking standards. About 35% tube-wells were found to be polluted with FC while those for 70% with TC. The concentrations of testing parameter in the drinking water samples were not permits all the sources of the WHO and Bangladesh Drinking Standards (BDS). From our investigations it has been found that location of latrine, dustbin, drain, bird's excreta and sewerage line near tube wells are more likely the reason of contamination of tube-well water with both FC and TC. This constitutes a major public health issue, as it could be a hazard to the human health, and special control measures should be taken.